[ 80.873521][ T1450] br1: port 1(vx10) entered blocking state [ 80.873841][ T1450] br1: port 1(vx10) entered disabled state [ 80.874131][ T1450] vx10: entered allmulticast mode [ 80.876862][ T1450] vx10: entered promiscuous mode [ 80.877813][ T1450] br1: port 1(vx10) entered blocking state [ 80.878406][ T1450] br1: port 1(vx10) entered forwarding state [ 81.234396][ T1455] br1: port 2(vx20) entered blocking state [ 81.234677][ T1455] br1: port 2(vx20) entered disabled state [ 81.234944][ T1455] vx20: entered allmulticast mode [ 81.237245][ T1455] vx20: entered promiscuous mode [ 81.238094][ T1455] br1: port 2(vx20) entered blocking state [ 81.238341][ T1455] br1: port 2(vx20) entered forwarding state [ 81.409275][ T1457] br1: port 3(veth1) entered blocking state [ 81.409553][ T1457] br1: port 3(veth1) entered disabled state [ 81.409821][ T1457] veth1: entered allmulticast mode [ 81.411734][ T1457] veth1: entered promiscuous mode [ 81.485387][ T37] br1: port 3(veth1) entered blocking state [ 81.485791][ T37] br1: port 3(veth1) entered forwarding state [ 81.749656][ T1461] br1: port 4(veth2) entered blocking state [ 81.750158][ T1461] br1: port 4(veth2) entered disabled state [ 81.750674][ T1461] veth2: entered allmulticast mode [ 81.754883][ T1461] veth2: entered promiscuous mode [ 81.852564][ T37] br1: port 4(veth2) entered blocking state [ 81.853158][ T37] br1: port 4(veth2) entered forwarding state [ 85.523240][ T1512] br2: port 1(w1) entered blocking state [ 85.523550][ T1512] br2: port 1(w1) entered disabled state [ 85.523799][ T1512] w1: entered allmulticast mode [ 85.526388][ T1512] w1: entered promiscuous mode [ 86.259526][ T1520] br2: port 2(vx10) entered blocking state [ 86.259830][ T1520] br2: port 2(vx10) entered disabled state [ 86.260131][ T1520] vx10: entered allmulticast mode [ 86.262025][ T1520] vx10: entered promiscuous mode [ 86.263024][ T1520] br2: port 2(vx10) entered blocking state [ 86.263296][ T1520] br2: port 2(vx10) entered forwarding state [ 86.935318][ T1527] br2: port 3(vx20) entered blocking state [ 86.935666][ T1527] br2: port 3(vx20) entered disabled state [ 86.935932][ T1527] vx20: entered allmulticast mode [ 86.937868][ T1527] vx20: entered promiscuous mode [ 86.938472][ T1527] br2: port 3(vx20) entered blocking state [ 86.938714][ T1527] br2: port 3(vx20) entered forwarding state [ 87.638954][ T37] br2: port 1(w1) entered blocking state [ 87.639361][ T37] br2: port 1(w1) entered forwarding state [ 89.837592][ T1567] br2: port 1(w1) entered blocking state [ 89.837883][ T1567] br2: port 1(w1) entered disabled state [ 89.839377][ T1567] w1: entered allmulticast mode [ 89.841367][ T1567] w1: entered promiscuous mode [ 90.496789][ T1575] br2: port 2(vx10) entered blocking state [ 90.497624][ T1575] br2: port 2(vx10) entered disabled state [ 90.497913][ T1575] vx10: entered allmulticast mode [ 90.499883][ T1575] vx10: entered promiscuous mode [ 90.500431][ T1575] br2: port 2(vx10) entered blocking state [ 90.500670][ T1575] br2: port 2(vx10) entered forwarding state [ 91.088319][ T1582] br2: port 3(vx20) entered blocking state [ 91.088664][ T1582] br2: port 3(vx20) entered disabled state [ 91.088963][ T1582] vx20: entered allmulticast mode [ 91.090992][ T1582] vx20: entered promiscuous mode [ 91.091595][ T1582] br2: port 3(vx20) entered blocking state [ 91.091864][ T1582] br2: port 3(vx20) entered forwarding state [ 91.776536][ T39] br2: port 1(w1) entered blocking state [ 91.776836][ T39] br2: port 1(w1) entered forwarding state [ 107.450874][ T11] vx20: left allmulticast mode [ 107.451208][ T11] vx20: left promiscuous mode [ 107.451585][ T11] br2: port 3(vx20) entered disabled state [ 107.454281][ T11] vx10: left allmulticast mode [ 107.454495][ T11] vx10: left promiscuous mode [ 107.454810][ T11] br2: port 2(vx10) entered disabled state [ 107.457020][ T11] w1: left allmulticast mode [ 107.457238][ T11] w1: left promiscuous mode [ 107.457555][ T11] br2: port 1(w1) entered disabled state [ 108.037102][ T11] vx20: left allmulticast mode [ 108.037369][ T11] vx20: left promiscuous mode [ 108.037687][ T11] br2: port 3(vx20) entered disabled state [ 108.041196][ T11] vx10: left allmulticast mode [ 108.041848][ T11] vx10: left promiscuous mode [ 108.042247][ T11] br2: port 2(vx10) entered disabled state [ 108.045359][ T11] w1: left allmulticast mode [ 108.045608][ T11] w1: left promiscuous mode [ 108.045951][ T11] br2: port 1(w1) entered disabled state [ 108.465616][ T11] ================================================================== [ 108.465857][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 108.466073][ T11] Read of size 8 at addr ffff88800f0f1a38 by task kworker/u16:0/11 [ 108.466257][ T11] [ 108.466324][ T11] CPU: 1 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 108.466517][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 108.466680][ T11] Workqueue: netns cleanup_net [ 108.466829][ T11] Call Trace: [ 108.466930][ T11] [ 108.467004][ T11] dump_stack_lvl+0x82/0xd0 [ 108.467140][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 108.467306][ T11] ? cleanup_net+0x932/0xa40 [ 108.467435][ T11] print_report+0xb4/0x270 [ 108.467564][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 108.467702][ T11] kasan_report+0xbd/0xf0 [ 108.467803][ T11] ? cleanup_net+0x932/0xa40 [ 108.467932][ T11] cleanup_net+0x932/0xa40 [ 108.468070][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 108.468202][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 108.468330][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 108.468462][ T11] ? lock_acquire+0x32/0xc0 [ 108.468589][ T11] ? process_one_work+0xe0b/0x16d0 [ 108.468730][ T11] process_one_work+0xe55/0x16d0 [ 108.468861][ T11] ? __pfx___lock_release+0x10/0x10 [ 108.468994][ T11] ? __pfx_process_one_work+0x10/0x10 [ 108.469124][ T11] ? assign_work+0x16c/0x240 [ 108.469254][ T11] worker_thread+0x58c/0xce0 [ 108.469387][ T11] ? __pfx_worker_thread+0x10/0x10 [ 108.469516][ T11] kthread+0x28a/0x350 [ 108.469615][ T11] ? __pfx_kthread+0x10/0x10 [ 108.469764][ T11] ret_from_fork+0x31/0x70 [ 108.469901][ T11] ? __pfx_kthread+0x10/0x10 [ 108.470029][ T11] ret_from_fork_asm+0x1a/0x30 [ 108.470164][ T11] [ 108.470263][ T11] [ 108.470330][ T11] Allocated by task 1546: [ 108.470429][ T11] kasan_save_stack+0x24/0x50 [ 108.470565][ T11] kasan_save_track+0x14/0x30 [ 108.470716][ T11] __kasan_slab_alloc+0x59/0x70 [ 108.470845][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 108.470981][ T11] copy_net_ns+0xc6/0x340 [ 108.471080][ T11] create_new_namespaces+0x35f/0x920 [ 108.471210][ T11] unshare_nsproxy_namespaces+0x8d/0x130 [ 108.471339][ T11] ksys_unshare+0x2a9/0x660 [ 108.471472][ T11] __x64_sys_unshare+0x31/0x40 [ 108.471598][ T11] do_syscall_64+0xc1/0x1d0 [ 108.471738][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 108.471911][ T11] [ 108.471979][ T11] Freed by task 11: [ 108.472078][ T11] kasan_save_stack+0x24/0x50 [ 108.472207][ T11] kasan_save_track+0x14/0x30 [ 108.472338][ T11] kasan_save_free_info+0x3b/0x60 [ 108.472471][ T11] __kasan_slab_free+0x38/0x50 [ 108.472600][ T11] kmem_cache_free+0xf8/0x330 [ 108.472745][ T11] cleanup_net+0x5a8/0xa40 [ 108.472874][ T11] process_one_work+0xe55/0x16d0 [ 108.473011][ T11] worker_thread+0x58c/0xce0 [ 108.473143][ T11] kthread+0x28a/0x350 [ 108.473239][ T11] ret_from_fork+0x31/0x70 [ 108.473367][ T11] ret_from_fork_asm+0x1a/0x30 [ 108.473499][ T11] [ 108.473567][ T11] Last potentially related work creation: [ 108.473712][ T11] kasan_save_stack+0x24/0x50 [ 108.473856][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 108.473992][ T11] insert_work+0x34/0x230 [ 108.474091][ T11] __queue_work+0x5fd/0xa40 [ 108.474221][ T11] queue_delayed_work_on+0x8c/0xa0 [ 108.474351][ T11] __inet_insert_ifa+0x751/0xb10 [ 108.474482][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 108.474611][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 108.474756][ T11] netlink_rcv_skb+0x130/0x360 [ 108.474891][ T11] netlink_unicast+0x44b/0x710 [ 108.475029][ T11] netlink_sendmsg+0x723/0xbe0 [ 108.475162][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 108.475298][ T11] ___sys_sendmsg+0xee/0x170 [ 108.475428][ T11] __sys_sendmsg+0x109/0x1a0 [ 108.475564][ T11] do_syscall_64+0xc1/0x1d0 [ 108.475706][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 108.475874][ T11] [ 108.475943][ T11] Second to last potentially related work creation: [ 108.476111][ T11] kasan_save_stack+0x24/0x50 [ 108.476250][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 108.476381][ T11] insert_work+0x34/0x230 [ 108.476481][ T11] __queue_work+0x5fd/0xa40 [ 108.476611][ T11] queue_delayed_work_on+0x8c/0xa0 [ 108.476755][ T11] __inet_insert_ifa+0x751/0xb10 [ 108.476887][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 108.477028][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 108.477160][ T11] netlink_rcv_skb+0x130/0x360 [ 108.477290][ T11] netlink_unicast+0x44b/0x710 [ 108.477421][ T11] netlink_sendmsg+0x723/0xbe0 [ 108.477550][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 108.477685][ T11] ___sys_sendmsg+0xee/0x170 [ 108.477829][ T11] __sys_sendmsg+0x109/0x1a0 [ 108.477960][ T11] do_syscall_64+0xc1/0x1d0 [ 108.478092][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 108.478260][ T11] [ 108.478328][ T11] The buggy address belongs to the object at ffff88800f0f1980 [ 108.478328][ T11] which belongs to the cache net_namespace of size 6080 [ 108.478671][ T11] The buggy address is located 184 bytes inside of [ 108.478671][ T11] freed 6080-byte region [ffff88800f0f1980, ffff88800f0f3140) [ 108.479005][ T11] [ 108.479073][ T11] The buggy address belongs to the physical page: [ 108.479233][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800f0f32c0 pfn:0xf0f0 [ 108.479498][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 108.479701][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 108.479873][ T11] page_type: f5(slab) [ 108.479983][ T11] raw: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 108.480218][ T11] raw: ffff88800f0f32c0 0000000000050002 00000001f5000000 0000000000000000 [ 108.480447][ T11] head: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 108.480696][ T11] head: ffff88800f0f32c0 0000000000050002 00000001f5000000 0000000000000000 [ 108.480939][ T11] head: 0080000000000003 ffffea00003c3c01 ffffffffffffffff 0000000000000000 [ 108.481170][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 108.481398][ T11] page dumped because: kasan: bad access detected [ 108.481560][ T11] [ 108.481627][ T11] Memory state around the buggy address: [ 108.481772][ T11] ffff88800f0f1900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 108.481971][ T11] ffff88800f0f1980: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 108.482162][ T11] >ffff88800f0f1a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 108.482351][ T11] ^ [ 108.482513][ T11] ffff88800f0f1a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 108.482721][ T11] ffff88800f0f1b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 108.482921][ T11] ================================================================== [ 108.483183][ T11] Disabling lock debugging due to kernel taint [ 109.985007][ T1722] br1: port 4(veth2) entered disabled state [ 110.045225][ T1723] veth2: left allmulticast mode [ 110.045482][ T1723] veth2: left promiscuous mode [ 110.045782][ T1723] br1: port 4(veth2) entered disabled state [ 110.228246][ T1726] br1: port 3(veth1) entered disabled state [ 110.297605][ T1727] veth1: left allmulticast mode [ 110.297851][ T1727] veth1: left promiscuous mode [ 110.298146][ T1727] br1: port 3(veth1) entered disabled state [ 110.414453][ T1729] vx20: left allmulticast mode [ 110.414700][ T1729] vx20: left promiscuous mode [ 110.414984][ T1729] br1: port 2(vx20) entered disabled state [ 110.704575][ T1733] vx10: left allmulticast mode [ 110.704787][ T1733] vx10: left promiscuous mode [ 110.705073][ T1733] br1: port 1(vx10) entered disabled state